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Quinn Butow22/11/2007 18:38:00
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5 forum posts
9 photos

I would like to move onto 3D flying after messing with sport F3A aircraft,  and noticed that some aircraft are called freestyle, while others 3D.

The only difference that i note are the wing styles, from thin section and taper for feestyle, and barndoor thick section for 3D.  

Can anyone help me decide which is the best choice ?

Ultymate22/11/2007 19:30:00
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Quinn there are far too many names in this field which are very confusing. Airframes that are now called freestyle are usually derivatives of F3A or pattern ships which have much enlarged flight surfaces (elevators ailerons and rudder) to make them 3D capable on high rates and still good for pattern on low rates. Then there's the fun fly types these are the one with the thick wing sections ie Cougar Hype etc, these will do a lot of 3D  but sometimes fall down in certain aspects and certainly won't fly pattern style and are not intended to be flown at high air speeds. Finally there's the scale or semi-scale aerobats ie Edges Extras Katanas Ultimates etc that again have enlarged flight surfaces which on high rates become very 3D capable or on low rates can be used for IMAC competition flying. The essence of 3D basically is that the wings have ceased to fly in a conventional manner ,that is they are stalled and the aircraft is being flown on vectored propthrust, obviously the other major thing needed is a very high power to weight ratio of at least 1.5:1. I hope this helps, if you have further questions post away. 
Ernie22/11/2007 19:42:00
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2513 forum posts
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Hi Quinn

It's all to do with aerodynamics ( I'm sure you know that). A thick, symmetrical section will fly very slowly. My cougar will hover in a medium wind, and turn on a sixpence. My capiche, is much better for large, scale like aerobatics,  Huge loops, slow rolls, like a full size aerobatic machine. For fun I prefer the Cougar..To show off (I never do that) its the Capiche.

ernie 

Ultymate23/11/2007 10:30:00
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1700 forum posts
62 photos
Sorry to disagree Ernie but the thickness of the airfoil has little to do with 3D flight which as I've said above takes place when the wings are stalled i.e. no longer flying, the aircraft simply flying on propwash. Yes the thicker funly sections will fly better at slower speeds but that is when the wings are still generating lift "capiche"  As for your Capiche whichever size it is, give it a decent 3D setup i.e. loads of movement and probably plenty of exponential to soften things up around centres and possibly experiment with the C/G and it will be equally if not more 3D capable than your Cougar, in the right hands they really do make an excellent performer 
Ernie23/11/2007 17:06:00
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2513 forum posts
20 photos

Hi Ultymate

You are of course absolutely correct...I was trying to simplify things

ernie

Quinn Butow25/11/2007 16:06:00
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5 forum posts
9 photos

Thanks you guys, does help me make a choice, more so now since I lost my sport F3A this weekend - showing off, and now need to go shopping, thinking about the Groove freestyle.

cheers

Alex(biggles) Wilkins24/07/2008 12:50:00
38 forum posts
Hi, can anybody recommend a good 3d style plane to start with.  Ide like to move in to 3d flying and therefore looking for my first 3d style plane. 
Alex(biggles) Wilkins24/07/2008 14:55:00
38 forum posts

Missed the mention by Quin of the Groove freestyle, i like the look of that one!  has anybody flown one of these? if so is it possible to mount the engine the right way up or on its side as the engine i was going to use doesnt like running upside down.

 Might be better to get a new engine any recomendations?

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